Refers to booting more than one operating system on one computer.

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Serious problem with damaged OS X dual boot partition (Mavericks 10.9.5 Macbook Pro 13-Inch Mid 2009)

So I'm having a lot of problems with my Hard Drive for about 3 days. What happened was, out of nothing, my computer started to act strange. I could not move or rename files (error -50), open any ...
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1answer
27 views

Windows (bootcamp) won't boot from hdd in optical drive bay

I have a mid-2012 MBP and I have done ye standard mod of replacing the original HDD with an SSD and shifted the original HDD into the optical drive bay. I then installed OSX (or should I call it ...
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70 views

Can't find installed ubuntu partition + rEFInd doesn't work

I created a new partition, created a bootable USB with Ubuntu 16.04 and installed it. After installation completed, I get the message for restart the device and I did it. So after that it boots ...
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54 views

Can't disable csrutil

I want to disable SIP with the command csrutil disable on my OS X 10.11.5. I tried it many times, got in the recovery mode and typed in csrutil disable. I got the message: Successfully disabled ...
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3answers
4k views

No bootable device USB 2.0 MacBook Pro mid 2014

I've been tearing my hair out the last couple days trying to get Windows installed. I have a MacBook Pro Retina 15 inch mid 2014. Yosemite version 10.10.1. Win 7 64 bit iso (sha1 - ...
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1answer
298 views

Dual Boot OSX on Retina MBP 15

I want to install a fresh copy of OSX onto my Retina MBP, next to the one that it came preinstalled with. I have created a 2nd partition using Disk Utility ready for the install, but have now found ...
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1answer
873 views

Reclaim hard drive space from deleted partition and reclaim Apple bootloader

I had my system dual-booted with Ubuntu 14.04. However, I found myself not using it enough to warrant the storage space. I deleted the ubuntu partition and the ubuntu swap partition. However, am now ...
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32 views

Upgrading to OS X El Capitan while maintaining dual boot

I've been running a MacBook Pro with OS X Yosemite dual boot with Linux, and I would like to upgrade to OS X El Capitan. However, I'm afraid that upgrading would break the ability to dual boot. How ...
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2answers
5k views

Mac Mini 2010: DualBoot (BootCamp) OSX Mavericks + Windows 8.1

Before Mavericks I had a BootCamp dual boot configuration with Lion and Seven x64. That was fine but, because I replaced the hard drive with a SSD model, I took a chance to set as the newest ...
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27 views

Problem Installing Kali Dual Boot on Mac OS X El Capitan

I've tried installing Kali by installing refind, reverting my CoreStorage main partition, resizing it to free 30 GB, and burning the Kali ISO to a USB using the Mac Linux USB Loader. However, when I ...
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3answers
558 views

Dual boot OS X and Manjaro - Problems

(Cross-posted in Linux StackExchange) So I'm trying to dual boot OS X and Manjaro. Using the graphical installer of Manjaro, you're given the option (well, it's an obligation) to create a partition ...
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52 views

refind : No bootable device (Mac and linux)

I just make dual boot on my macbook pro with linux fedora. when I enter linux on refind menu, it says "no bootable device -- insert boot disk and press any key". I know this question has been ...
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45 views

Cannot boot into OS X after partitoning

I have installed Ubuntu on a Mac Mini, everything works great. I'm able to switch back and forth without any problems. After that, I used GParted in Ubuntu to resize the OS X partition. I then create ...
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3answers
5k views

Is it possible to use Boot Camp with Windows 10 from an external HDD?

I need to run Visual Studio on my MacBook Pro and I need Windows to do that. The easiest and well known way to install Windows on a Mac is by running the Boot Camp app on the Mac and let it do what's ...
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3answers
39k views

Boot camp install of Windows 7 issue, no bootable devices

So I have a 2010 15" macbook pro (MBP6,1) and I replaced the optical drive with a hard disk. I wanted to install windows 7 on the hard disk with boot camp with a USB and ISO image. After searching I ...
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39 views

Permanently Decrypt non-CoreStorage Partition Encrypted with FileVault

I am asking this on the behalf of someone who did not want to sign up for the SE network. I will use first-person for simplicity. When I bought my computer, it came with FileVault enabled as default. ...
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1answer
13k views

Uninstall rEFInd 0.8-3.7 on Yosemite

I recently tried installing rEFInd on Yosemite using the command ./install.sh --alldrivers however it would not recognise the ubuntu 14.04 x64 for Mac disk I made and so I would like to uninstall ...
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2answers
250 views

Running Ubuntu on MacBook Pro 2015 — run natively (dual boot) or run in virtual machine for longer battery life?

I currently use Ubuntu in a virtual machine, using VirtualBox software on my host operating system, OS X, on my MacBook Pro 2015. However, the battery life drains quickly when Ubuntu is used ...
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0answers
100 views

Boot Camp not recognizing Windows 10 ISO

I'm trying to dual boot Windows 10 on MacBook Pro, and Boot Camp Assistant is failing to recognize the ISO I've downloaded (from https://www.microsoft.com/en-us/software-download/windows10ISO). I'm ...
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4answers
32k views

How do I get rEFInd working with OS X 10.11 El Capitan?

I noticed that I could not install and use rEFInd after upgrading to OS X 10.11 El Capitan. This restricts me to OS X so I cannot boot my Linux partition. I get the following error: error "Could not ...
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0answers
37 views

My partition is using negative space. Should I worry?

As you can see, according to Disk Utility, I'm using negative space in /dev/disk0s7. This is obviously incorrect, however, I am slightly worried as to what this may mean for the partition's effects on ...
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1answer
32 views

Bootcamp cannot find both systems at startup

Something strange happened: I closed my macbook pro while using windows 10 When I opened it again it didn't wake up for a while so I forced it to shut down by pressing the power button for 10 ...
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0answers
52 views

Bootcamp Windows 7 stuck in 'Installing Updates'. Windows Resuming so can't get to safe menu

I am using OSX version 10.10, I used Bootcamp to install Windows 7. I attempted to restart Windows and it stuck on Installing Updates 1 of 19 for about half an hour. I pressed the power button, I'm ...
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18 views

How to run multiple versions of Mac OSX on my MacBook

I recently bought a Macbook 4,1 from early 2008. (as it says in system information) I need to run multiple versions of osx, like on two partitions. I currently have installed os x 10.7 and need to ...
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4answers
46k views

How to install Windows 7 Bootcamp using iso file (without USB/DVD)?

I have a MacBook Pro and I need to install Windows 7 besides Mac OS X so I can play games on it. The problem is that I don't have a USB stick or DVD to copy the Win7 iso image like Bootcamp requires. ...
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0answers
31 views

Mac not booting into OS X nor hard-drive utility is running

I am using OS X El captain 10.11.4 on Macbook pro 2009 I created a partition in Boot camp assistance for windows 7, after reboot Windows installation started, but while installing setup shows ...
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1answer
338 views

Dual Boot Mavericks + El Capitan

I was using El Capitan without issues till now. I'm starting to use Pro Tools 10 which is incompatible with El Capitan, so I will need to install a previous OS X version like Mavericks to make it work....
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68 views

How to remove unusable Ubuntu partition after upgrading to OS X 10.11?

I dumbly upgraded my Mac OS X to "El Capitan" and I F&%#ed myself. I can't reinstall rEFInd because of SIP. I can't disable SIP because my recovery partition doesn't have csrutil. I can't delete ...
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0answers
60 views

rEFIt Not Working with Ubuntu 12.04/MacOS dual boot after upgrade to El Capitan

I have a MacBook Pro Late 2011 and the version of MacOS 10.7.2 Lion and I've always been using it no problem, so I didn't update to any of the newer versions of Yosemite, Mavericks, etc. On this Mac, ...
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2answers
3k views

Unable to mount Ubuntu 12.10 install .iso or .img

I'm following the instructions to create a bootable Ubuntu 12.10 USB stick on OS X found here. I can do step 3 and hdiutil appears to work fine, but when I go to mount the resulting ubuntu.img file I ...
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1answer
92 views

How to select an operating system to boot without a keyboard?

I'm in a pretty sticky situation right now... The USB keyboard that I've always used broke. I do have the wireless keyboard that came with my iMac. However, my iMac is dual-booted. When I turn it ...
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1answer
544 views

Efibootmgr command for OS X

I have successfully been able to install Linux Mint on my Mac. The only issue is I cannot select the boot partition holding option. To fix it I booted into linux and ran sudo efibootmgr -o 1,80. This ...
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1answer
214 views

Boot problem on dual-boot MacBook Pro

Can anyone help me restore the original boot 'order' on my Mac, using command-line? I wanted to install Ubuntu on my Macbook Pro Retina (early 2013), so I could run some specific software I needed ...
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2answers
365 views

Installing Windows 10 on MacBook early 2008 without bootcamp - black screen blinking cursor

I have tried to use the following method to install Windows 10 on my early 2008 Mac. Running OS X 10.7.5. Intel Core 2 Duo. 4 GB. How do I get Windows 10 installed on my macbook pro (late 2008) ...
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42 views

Is possible to create bootable encrypted partitions of Win10 + Debian + DATA on external SSD?

I'm dealing with pretty tricky problem. I want to have external disk completely separated from OS X running on internal SSD. On external SSD should be three partitions: Windows 10 - is possible to ...
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3answers
2k views

Dual boot Kali with Mac

I want to dual my Macbook with Mavericks 10.9.4 and Kali 1.0.8. I have downloaded the Kali .iso and "burnt" it to a USB stick using the dd command from in Terminal. I have partitioned my hard drive ...
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2answers
180 views

How to install Windows 10 additionally to OS X and Ubuntu (triple-boot)?

I have installed Ubuntu separately from OS X. rEFInd is already installed. Now I need to install Windows 10. I've created a separate partition for this in OS X. If I try to install Windows from USB, ...
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1answer
576 views

Dual-boot Linux on a Mac with original Boot Loader without uninstalling OS X

phew, long title beware! My question here is, I own a Macbook Air 2014 model, and have duel-booted OS X and Bootcamped Windows 10. Now I want to be able to install a Linux distribution (most likely ...
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1answer
85 views

How do to hibernate OS X in order to reboot to Windows 10

I have Yosemite and Windows 10 installed on my Macbook Pro 2015. On Windows 10 I can hibernate. Then press the power button and hold down ALT key to boot from OS X. However, I can't do the same thing ...
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0answers
41 views

Regain access to OR get rid of Windows, Linux partitions

(Note: this question is regarding an early 2015 MacBook Air (256 GB 2.2 GHz) running OS X Yosemite 10.10.3) I have happily been running my laptop dual booted with windows - installed as 8.1 Pro, ...
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0answers
51 views

Unable to Boot MacBook using any means after attempted Fedora Install

Wondering if anyone has any last ditch efforts I can try here to salvage my macbook! I recently attempted to install fedora to dual boot on my Late 2011 Macbook Pro, the install crashed, the ...
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1answer
260 views

Is running Linux through a VM as fast as running it natively on MacBook?

I am trying to decide whether I should run Linux natively or through a VM on MacBook 7,2? How much performance difference would I observe? Is it worth installing Linux natively or is running it ...
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1answer
506 views

How to make a bootable Yosemite Drive under El Captain (not installation drive)

I have installed El Captain on my MacBook Pro and I want to make a bootable Yosemite Drive. Could anyone help me with that?
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1answer
152 views

Run multiple instances of El Capitan on a single Apple laptop?

Is it possible to simultaneously run two instances of El Capitan on a single Apple laptop? Assume that I'm willing to purchase the best MacBook available as of November 2015, with the largest ...
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0answers
7 views

How to fix bootable OS on Mac with Grub Rescue [duplicate]

Yesterday I installed Kali Linux 2.0 on my MacBook Air (runs El Capitan). However, after managing to run it, and exiting it, i couldn't find Kali on my laptop anymore. I forgot to install Refind ...
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0answers
45 views

Delete yosemite partition from dual boot with el capitan

I want to install El Capitan and dual boot it with my current installation of Yosemite. I know how to achieve that with 2 partitions. I just wonder: if, later, I want to delete Yosemite, can I just ...
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1answer
62 views

Attempting to fresh install Ubuntu dual boot rEFInd does not recognize live boot

Attempted to do a fresh install of Ubuntu by following the procedure found here: Clean install Ubuntu on a dual boot with Windows I assumed that the fact that it was for Vista instead of OS X was ...
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1answer
909 views

Startup disks are disabled after upgrading to OS X El Capitan

Recently I upgraded my Mac mini to OS X El Capitan. After the upgrade completed, I can't select a startup disk in System Preferences -> Startup Disk. BOOTCAMP/Windows is disabled here. Searching ...
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1answer
206 views

How do I get drivers for Windows 10 x64 installed on my Mac?

I've just installed windows 10 x64 on my mac, a partition that I made with Disk Utility. I was going to use BootCamp however the way BootCamp formatted the partition in El Capitan didn't allow Windows ...
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0answers
26 views

Macbook booting up in Recovery Partition by default after dual-SSD/HDD

I've installed a SSD, and cloned my earlier HDD OS X to it using Carbon Copy Cloner. Now, whenever I boot-up, the MBP by default boots to recovery partition. How do I correct this? How do I ensure it ...